linux-kernel - Re: [PATCH] keep track of network interface renaming

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Date:	Sun, 11 Feb 2007 13:20:10 -0600
From:	Robert Hancock <hancockr@...w.ca>
To:	David Miller <davem@...emloft.net>,
	linux-kernel <linux-kernel@...r.kernel.org>
Cc:	lunz@...ooley.org
Subject: Re: [PATCH] keep track of network interface renaming

David Miller wrote:
> From: Jason Lunz <lunz@...ooley.org>
> Date: Sun, 11 Feb 2007 13:27:05 -0500
> 
>> On Sun, Feb 11, 2007 at 09:55:52AM -0800, David Miller wrote:
>>> This is kernel log clutter.
>>>
>>> You can ask the kernel for the list of interfaces, and
>>> use even ethtool to ask what driver each interface is
>>> associated with.
>>>
>>> The patch wasn't applied because it really is not necessary.
>> I disagree completely. I'm working right now on a udev-based system that
>> does ethernet device renaming. It's quite difficult when working with
>> udev to tell exactly when and why each interface was renamed, since it's
>> typically done within initramfs where it's difficult to enable debug
>> messages. This printk helps immensely.
> 
> You can listen on a netlink socket for these events if you
> want to see when they occur.

Unfortunately that's not very practical if, as in this case, the 
renaming is being done from an initramfs. Hiding this information as we 
do now is rather user-hostile.

> 
> There is no need for this log message, it is superfluous.

I think the minimal extra output from this is well worth it. If we care 
so much about limiting dmesg output, how about getting rid of all those 
hundreds of "PM: Adding info for" messages in recent kernels..

-- 
Robert Hancock      Saskatoon, SK, Canada
To email, remove "nospam" from hancockr@...pamshaw.ca
Home Page: http://www.roberthancock.com/

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